Three-sided sign



FIG. 1 is an isometric view of a first embodiment of a three-sided sign;

FIG. 2 is a front plan view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an isometric view of a second embodiment of a three-sided sign;

FIG. 9 is a front plan view of FIG. 8;

FIG. 10 is a rear view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines shown in the drawings are included for purposes of illustrating portions of the three-sided sign and form no part of the claimed embodiment. 

CLAIM The ornamental design for a three-sided sign, as shown and described. 